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Finding the Fourth Proportional to 371,571.72, 557,347.86 and 131,682.12

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Solution

The fourth proportional to 371,571.72, 557,347.86 and 131,682.12 is: 197,519.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,571.72 : 557,347.86 = 131,682.12 : x
  2. Step 2: Convert to fraction form
    371,571.72/557,347.86 = 131,682.12/x
  3. Step 3: Cross multiply
    371,571.72x = 557,347.86 × 131,682.12
  4. Step 4: Simplify right side
    371,571.72x = 73,392,747,782.26
  5. Step 5: Solve for x
    x = 73,392,747,782.26/371,571.72
  6. Step 6: Final answer
    x = 197,519.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.